反应详情

To a stirring solution of 330 mg (0.73 mmol) of 2-(2,4-dioxo-5-phenyl-2,3,4,5-tetrahydro-benzo[b][1,4]diazepin-1-yl)-N-isopropyl-N-(4-methoxy-phenyl) acetamide, prepared as in Intermediate 4, in 10 mL DMF at 0° C. is added dropwise over 5 min 1.75 mL (0.87 mmol, 1.1 equiv) of a 0.5M solution of KN(TMS)2 in toluene. The resulting solution is stirred 10 min, then a solution of 180 mg (1.18 mmol, 1.1 equiv) of 1-methyl-3-bromomethyl-1H-indazole in 3 mL DMF is added. The resulting solution is stirred 3 h at RT and then quenched with 5 mL of H2O. The reaction mixture is poured into 50 mL of EtOAc and extracted with H2O (2×50 mL). The organic layer is separated, dried (MgSO4), and the solvents removed in vacuo. Purification by silica gel flash column chromatography using hexane/EtOAc 2/1 as eluent followed by further purification via silica gel MPLC using a Si60 column and hexane/EtOAc 1/1 as eluent followed by lyophilization in acetonitrile/H2O afforded 100 mg of the title compound as a white amorphous solid: 1H NMR (CDCl3, 300 MHz) δ7.74 (d, 1H, J=8.3), 7.25-6.76 (m, 16H), 4.85 (m, 1H), 4.11 (s, br, 2H), 3.97 (dd, 1H, J=5.6, 7.8), 3.77 (s, 3H), 3.70 (s, 3H), 3.63 (dd, 1H, J=7.8, 15.9), 3.48 (dd, 1H, J=5.6, 15.9), 0.92 (d, 6H, J=6.8); low resolution MS (FAB)m/e 602 (MH+), 437. Anal. (C36H35N5O4) Calcd. C, 71.86; H, 5.86; N, 11.64; Found C, 71.69; H, 5.91; N, 11.56.

1. stirringThe resulting solution is stirred 3 h at RT
2. customquenched with 5 mL of H2O
3. additionThe reaction mixture is poured into 50 mL of EtOAc
4. extractionextracted with H2O (2×50 mL)
5. customThe organic layer is separated
6. dry with materialdried (MgSO4)
7. customthe solvents removed in vacuo
8. customPurification by silica gel flash column chromatography
9. customfollowed by further purification via silica gel MPLC